Bronzing machine



oct. 2,1923. 1,469,341

R. J. SPENCER BRONZ ING MACHINE Filed April 15. 1922 3 Sheets-Sheet 1 R Spence/1 WITNS: ATTORNEY R. J. SPENCER BRONZING MACHINE Oct. 2, 1923.*

Filed April 15. 1922 :s sheets-sheet 2 ATTORN EY WITNSS:

Oct. 2 1923.

R. J. SPENCER BRoNzING MACHINE Filed April 15. "1922 s sheets-sheet s INVENTOR ATTORNEY WITNES:

Patented at. a, .x

Application filed April 15, 1922. 4Seriell No. 553,189.

To all whom t may concern.'

Be it known that I, RroHARD J. SPENCER, a citizen of the United States, residing at Chattanooga, in the county of Hamilton g and State of Tennessee, have invented newand useful Improvements in Bronzing Machines, of which the following is a speelcation. p

rlhis invention relates to an attachment E@ for printing presses and has for its object the provision of a novel device designed to be mounted upon a cylinder printing press for the purpose of applying bronze powder or powder of any kind to the printed g5 sheets while they arestill Wet, the device having the great advantage of-eliminating the usual manual labor 'involved in this operation and consequently being a great time saver. gg An important and morev specificv object is the provision of a device of this character designed for association with a cylinder printing press and including a housing into which is fed the loronzing powder andJ within which operates a distributingroller which is positively driven hy one ofthe gears of the 4press mechanism, this roller 'operating to apply the powder to the wet printed sheets immediately upon their leaving the type.

Another objectv is the vprovision of a device of this character in which ample means is provided for e'ecting whatever adjustrnent may he necessary to take up wear loe-- @a tween the various intermeshing gears so as to revent back lash.

n additional object is the provision of a device'othis chracter which will be simple and inexpensive in manufacture, and installation, highly efficient in use, positive in service, and-a general improvement in the art.

With the above and Aother objects and advantages in view, the invention consists in the details of construction to be hereinafter more fully described and claimed,

and illustrated in the accompanying draw-* ings, in which:

Figure 1 is a side elevation of aportion l0 of a cylinder printing press showing my device applied thereto.

Figure 2 is a top plan view. Figure 3 is a cross sectional view through my device.

'L buting roller.

one of the vdriving gears. As the present 70 Y invention is not concerned with the ordinary printing mechanism, certain parts thereof are illnstratedmore or less diagrammatically but not in detail.

ln carrying out my invention l pro ide' 75 a pair of frame members 10 which are bolted upon opposite sides of theframe A at some i convenient location and which terminate in horizontally extending arms 11 formed'- with elongated rectangular openings 12 80 within which are slidably disposed bearing members 13 through which is journaled fla Shaft 14 carryingoa roller which consists of a-wooden core 15 covered with many layers of cloth 16 of felt or other fabric. B5 Threaded through the webs at opposite ends of the opening 12 are set screws 17 `which engage the bearing member 13 and which' are' for the purpose of adjusting the position of the hearing members and consquently 90 the position of the cloth covered" roller.

The numeral 18 designates broadly a housing which surrounds the cloth covered roller'and which is formed l or .provided with arms 19Awhich are adjustably connected 95 with vthe frame members 10 by means of belts 20 which pass through elongated slots -21 in the frame members.' At one portion in its periphery this housinglS is interrupted or cut away as shown at 22 for a pur- -100 pose to `he described. At another point in its periphery the housing is formed with an enlarged hollow portion 23 which is designed as a. reservoir for containing the bronzin powder to'be used upon the printed-sheet. 1015 The top of. this reservoir and the top of the housing are closed by covers 24 and 25 respectively. These covers are united by the same hinges 26 and are provided at their ends with fastening members 27 which may be operated to hold the covers closed or to permit them to be opened. .These covers are also provided with any sultable handles or nger grips by means of which they may be more conveniently lifted though such are not an essential feature.

The wall of the housing between the reservoir and the inner periphery which is adjacent the cloth covered roller is formed with a plurality of perforations 28 whlch are for the purpose of allowing the bronzing powder .within the hollow compartment to pass down onto the cloth covered roller. A very important feature is the provision of a longitudinally slidable plate 29 which is formed with perforations 30 adapted to register with the rforations 28 and which 1s mounted within spaced guides 31 onwthe housing. One end of this slidable plate is provided with a handle lug 32 by means of which it may be moved back and` forth to cover or uncover to a greater or less extent the perforations 28 in the housing. In this way it will be seen that the feed of the powder may be regulated at will to lneet any and all conditions which may arise in the operation of the device.

Secured upon the shaft 14 at one end of the roller is a pinion 33 meshing with an intermediate pinion 34 journaled at 35 upon the frame member 10 and meshing, in turn, with the gear C of the printing press mechanism.

Assuming that the device has been constructed and assembled as above described, in the operation it will be seen that as the printed sheets pass from the cylinder of the printing press they will pass over the cut away portion 22 of the.y housing andqwill brush lightly against the cloth covering 16 of the roller. Owing to the fact that this roller is constantly rotated by means of the ear O and owing to the provision of the perforated slide plate controlled outlet in the portion of the housing which separates the powder container from the portion within which the roller rotates, the external surface of the cloth of the roller will be constantly covered with the bronzing powder. As the sheets of paper having the ink or sizing thereon still wet pass in a contact with this cloth covered roller, it is apparent that the particles of bronzing powder thereon will adhere to the wet ink or sizing so as to produce the desired eect. lt is to be noted that in case of looseness in the intermeshing of the gears, that is in the event of any. back-lash or play, the set screws 17 may be adjusted to bring the pinions properly into enga ement with each other and with the gear for insuring the proper action. Owing to the fact that the bolts 20 which hold the housing in lposition pass through Maaate the elongated slots 21 in the frame members 10, 1t w1ll be apparent that the housing itself may be adjusted with respect to the cloth covered roller so as to cause the latter to be always central with respect to the housing. In this way it will be seen that ample provision is made fortaking care of all variations such as occur in the dimensions of different cylinder presses and also to take up any wear which may occur. Owing to ,the adjustability of the shaft carrying the cloth covered roller itis apparent that the degree of vpressure exerted thereon against the sheets may be regulated so that the cloth covered roller will touch the wet sheets only very lightly so as to avoid any possibility of smearing.

From the foregoing description anda study of the drawings it will be apparent that l have thus provided a simply constructed and consequently inexpensive device which may be manufactured and sold commercially as a separate entityadapted for installation upon or for attachmentto already existing printing presses of the cylinder type. It is also to be noted that the device might be built into the presses during their manufacture without involving any very great additional expense. Owing to the provision of the various adjusting means and owing to the general relation and association of the parts, it is apparent that the device will operate very efficiently to produce the proper bronzing effect in an ex tremely rapid, simple and economical manner, the ordinary manual labor usually involved being entirely eliminated so that a y vast amount of time will be saved.

Owing to the si-mplicity of the construction and the fewness of the parts it is apparent that there is nothing to get out of order and that the device should consequentlv have a long life and satisfactorily perform all the functions for which it is intended.

While l have shown and described the preferred embodiment of the invention, it is of course to be understood that I reserve the right to make such changes in the form, construction and arrangement of parts as 115 will not depart from the spirit of the invention or the scope of the subjoined claims,

What is claimed is:

1. A bronzing attachment for cylinder presses comprising an elongated casing pro- 120 vided with means for attachment to the frame of a cylinder press, said casing being cylindrical throughout the major portion of its cross sectional configuration but having one upper corner formed rectangular, a 125 cover for said rectangular corner, a curved partition within the casing at said rectanygular corner to define a compartment forl the storage of bronzing powder,

said partition being formed With Openings permitting 1180 neonati outlet of powder from the reservoir compartment into the casing, said casing being formed with a slot, and a driven roller litting and rotating within the casing and exposed at said slot.

2. A bronzing attachment for cylinder presses comprising an elongated casing provided with means for attachment' to the frame of a cylinder press, said casing being .cylindrical throughout the major portion of its cross sectional configuration but having one upper corner formed rectangular, a cover for said rectangular corner, a curved artition within the casing at said rectanguar corner to define a compartment for the,

storage of bronzing powder, said partition being formed with openings permitting outlet of powder from the reservoir compartment into the casing, said casing being formed with a slot, and a driven roller tting and rotating within the casing and exposed at said slot, said partition being formed with guides, and a plate arcuate in cross section slidably mounted upon the partition and formed with holes adapted to register to a greater or less extent with the holes in the partition whereby to regulate the flow of powder.

3. A bronzing attachment for cylinder printing presses comprising a pair of frame lmembers secured upon the frame' of the press,

tact, and means for adjust the position of the housing independently of the roller.

d. A bronzing attachment for cylinder printing presses comprising a air of frame members secured upon the ame of the press, a housing carrled hy said frame members and formed with a reservoir for the storage of bronzing powder, a rotary cloth covered roller o erating within said housing and engaged hghty b wet printed sheets leaving the cylinder o the press, a portion of said housing being cut away to expose the roller, means for adjusting the position of the roller toward or from the sheets whereby to regulate the degree of pressure of the contact, and means for adjusting the 'housing with respect to the frame members including bolts carried by arms formed on the housing and passing through elonted slots in the frame members. f

5. A bronzing attachment for cylinder printing presses comprising a pair of w1. n members secured upon opposite sides of the cylinder printing press, a cylindrical housing adjustahly mounted between said me members and form@ with a comartment for the storage of bronzing power, said compartment `bein formed with a opening normally osed by a closure cap, a portion of seid housing being cut away and a rotary covered roller journaled within said housing, said roller having a shaft, bearing members for said shaft slidably mounts within said members', screws threaded through the frame members and engaging said bearings whereby to vary the position or the roller with .w to the printed sheets passing from t press.

ln ony whereof l a my si i ature.

e cylinder of the f 

